Improvement in packing the shafts of dry gas-meters



PATENTED SEPT- l2- 1865.

N; TUFTS, R. PACKING THE SHAPTS 0F DRY GAS METERS.

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a v ww I UNITED i STATES PATENT OFFICE.

NATHANIEL TUFTS, JR, OF BOSTON, MASSACHUSETTS.

Specification forming part of Letters Patent No. 49,935, dated September 12, 1865.

To all whom u may concern:

Be it known that I, NATHANIEL Tnn'rs, J r., of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvewith the registering clock-work, and for otherpurposes, that gas will not leak out around them without creating somuch friction thereupon as tointerfere with the proper operation of the meter. If the packing is left loose, so that the operation of the n'ieohanism of the me ter is not retarded by the friction of the pack ing', then the gas will escape, so as to be annoying and even dangerous. I

The drawing embodying my invention represents by a a portion of the case of a dry gasmeterwhere theshai't is located which operates the indicating mechanism, said shaft being cranked and marked b. Connected with this case a. is apacking-box, 0, having a follower, d. The packing within the box is oiled or greased fibrous material, and is marked 6, while above and below said packing are leather washers 0.

This cup catches all the oil or grease which,

works out of the packing, and thereby makes afluid joint past which the gas does notescape, even though the packing in the packingbox is quite loose therein. a

- Insetting up new meters I prefer .to fill the space between the cups and the packing-boxes with oil and tallow mixed.

I claim--- In dry gas-meters, and in combination with the vertical shafts therein and with the packing-boxes of such shafts, [he oil-cup s, when secured to such shafts and made to rotate therewith.

In witness whereof I have hereunto set my hand this 14th day of August, A. D. 1865.

NATHANIEL TUFIS, JR.

Witnesses:

J. B. CROSBY, F. GOULD. 

